Pipe or rod coupling



Dec. s, 1931.

B. HUNZIKER PIPE 0R. ROD CUPLING T"iled Aug. 6, 1928 l N VEN TOR.

WLM/m All! 3 'nimh Patented De'c. 8, 1931 Puiiiaii'r orFics BENJAMINV]':IUl\l'Z]KER, OF KANSAS CITY, MISSOURI RIPE on. non coUPLINeApplication filed August 6, 1928. Serial No. 297,734.

ble, not likely to break or get out of order,

which is easily attached, and which is as easily det-ached after theoperation of setting the pile has been completed.

The novel features of my invention are hereinafter fully described andclaimed.

In the accompanying drawings, which illustrate the preferred embodimentof my invention,

Fig. l is a side elevation, partly broken away, of a concrete pile andmy improved coupling connecting the center pipe of the pile with thesupply hose.

Fig. 2 is an enlarged side elevation of my improved coupling.

Fig. 3 is a top view of the same showing the gripping members in thelclosed gripping position.

Fig. t is an enlarged section on the line 1 -'l of Fig. 3.

Fig. 5 is a section on the line 5-5 of Fig. 3.

Fig. 6 is a plan view, enlarged and partly broken away of the coupling,showing the gripping members in the open positions.

Fig. 7 is a reduced elevation, taken at right angles to that shown inFig. l, showing the coupling connected to the pile and to the supplyhose, part of the latter and part of the pile being broken away.

' Similar reference characters designate` similar parts in the differentviews.

l designates an ordinary concrete pile having extending through it acenter pipe 2 through which water is forced from a supply hose 3 in theoperation of setting the pile. The latter is lifted and let fall whilewater is being discharged from the pipe 2 at the tapering lower end ofthe pile.

The object of my invention is to connect by my improved coupling thepile pipe 2 with the nipple 4 with which the lower end of the hose 3 isprovided.

My improved coupling comprises two gripping members 5, each of which isprovided with two oppositely tapered threaded recesses (3 and 7, saidrecesses cooperating with the corresponding recess of the other memberfor respectively receiving the nipple l and the threaded upper end ofthe pipe 2.

For holding the members 5 in clamping cngagement with the nipple 4 andthe pipe if, there are provided two horizontal connecting memberscomprising two bolts 8 which are eirtended through and are rotatablymounted in the members 5 and which are slidable in said members.-

Respectively mounted on the bolts 8 are nuts 9 which respectively bearagainst the outer sides of thev members 5.

Each bolt 8 is provided with a rectangular head 10 which bears againstthe outer side of the adjacent member 5, and which, when the bolt isturned at right angles to the locking position, shown in Fig. 1l, and insolit lines in Fig. 2, is adapted to enter a recess ll in the adjacentside of the adjacent member 5, as shown in Fig. 6, and in dotted linesin Fig. 2. Y

For turning the bolts 8 to the released positions'in which they willenter the recesses 11, to permit the members 5 to move apart, to releasethe nipple i and pipe each bolt 8 is provided with a crank arm l2. Avertically movable ojvieratingmember, such as cable 13 has at its lowerend two branches 14 respectively attached, eccentrically to the aXes ofthe bolts' 8, to the crank arms 12, so that, when the cable 13 islifted, the arms l2 will be swung to the upright position, shown in Fig.6.

Vhen the crank arms l2 are swung to the upright position, shown in Fig.(i, the bolts 8Y will be turned so that the heads i() will register withthe recesses ll, at which time, the members 5 will be moved apart to therelease positions by means oftwo coil springs l5 which respectivelyencircle the bolts 8 and Vwhich, at Vone set ofends respectively bearill) ,against the inner sides of the members 5, and at their other endsagainst the crank arms 12.

To vertically reciprocate the pile 1, the members 5 may be respectivelyprovided on their outer sides with two eyes 16 to which are respectivelyfastened the two branches 17 of a lifting cable 18, Fig. 7.

In the operation of the invention, the'bolts 8 ai'e turned to thepositions shown in Fig. G, in which positions, the springs 15 will forcethe members 5 to the open positions. The nipple 4 and pipe 2 are thenplaced between the members 5, so that the nipple et will engage thethreaded parts G and "the pipe 2 will engage the threaded parts 7. Thenuts 9 are then loosened, so that the bolts vb may be pushed through themembers 5 to positions in which the heads l0 can pass out ot therecesses 11.

The crank arms 12 are then turned to the positions shown in Fig. 3 uponwhich the heads 1() will bear againstvthe outer sides ont the members 5,Fig. 2. The nuts 9 are then turned so as to move the membersI 5 to theclosed positions, shown in Fig. and in Fig. l, at which time, the nipplei- .and pipe will be iitted in and held in the threaded recessedportions 6 and 7 respectively. The nipple i and the pipe 2 will thus beconnected by the members 5, so that water can be forced from the nipplea through the members and through the pipe The pile may then be liftedand let fail by mea-ns of the cable 18 until the pile has been set. Bythen upwardly pulling the cable i3, the bolts 8 may be turned, `asdescribed, to the release positions.

The springs 15 will then oree the members 5 apart, thus releasing thecoupling irom the nipple i and the pipe 2, upon which the coupling maybe elevated for use in setting another pile. f

To prevent the bolt heads 10 ina-kine more than a quarter turn, theheads may be mounted in depressions 1i) at opposite sides respectivelyvof each recess 11 as shown in F10: 2

1 w a n a and in li ig. e. 'l hesc depressions .a re disposed so as topermit each bolt 8 to turn from the position shown in Fig. 2 only in thedirection indicatedby the arrow, and only onequarter of a revolution.

I do not limit my invention to the structure shown and described, asmany modiiieations, within the scope ot' the appended claims, may bemade without departing trom the spirit ot my invention.

Vhat I claim is M 1. A coupling comprising two gripping members having`means adapted to grip between them the adjacent ends of two pipesV orrods, a connecting member rotatable in said gripping members andslidable in one oi the gripping members the slidable gripping member andsaid connecting member having connection means between them by whichsaid connecting member when in one position will bear against and holdthe latter gripping member in the gripping position, and, when saidconnecting member is rotated from said position, it will release theslidable gripping member to permit the latter to move from the grippingposition, and means for turning the connecting member from its holdingposition.

2. A coupling comprising two gripping members having means adapted togrip between them the adjacent ends et two pipes or rods and providedwith transverse registering h'oles, a bolt rotatable in said holes andslidable in one of the gripping members, the latter having in its outerside a lateral recess communicating with said hole in said member, saidbolt having a head adapted, in one position oit the bolt, to engage thesaid outer side of said gripping member in which it is slidable, and thebolt being rotatable Yfrom said position te a position in which saidhead will enter said recess and permit the slidable gripping member tomove from the gripping position, a nut on said bolt adapted to bearagainst the other gripping member, and means by which said bolt maybeturned 'from the holding position to the release position.

3. A coupling comprising two gripping mei'ubeis having means adapted togrip between them the adjacent ends of two pipes or rods and providedwith transverse registering holes, a bolt rotatable in said holes andslidable in one of said members, the latter haifing in its outer side .alateral recess communicating with said hole in said member, the bolthaving a head adapted, in one position of the bolt to bear against saidouter side and hold the slidable gripping member in the grippingposition, said head being adapted to enter said recess to release theslidable-gripping member, when the bolt is turned itrom the holdin to arelease position, the bolt having a crank arm by which it may be turned,a nut on said vbolt bearing against the other gripiliing member, .aspring normally tending to force said gripping members apart, and meansengaging said crank arm for turning said bolt to the released position.

In testimony whereof I have signed my name to this specification.

BENJAMXN HUNZIKER

